是一种半强调结构,so表示强调.这不是倒装结构,因为主语和谓语并不倒装.
这个结构用于前一句说了某人怎样怎样,后一句说他确实怎样怎样.如：
Jim works hard.So he does.
Jim has done it already.So he has.
Jim is a teacher.So he is.
Jim waited for her for seven hours.So he did.